/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.iotdb.tsfile.file.metadata.enums;

import org.apache.iotdb.tsfile.exception.write.UnSupportedDataTypeException;

import java.io.DataOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;

public enum TSDataType {
    /**
     * BOOLEAN
     */
    BOOLEAN((byte) 0),

    /**
     * INT32
     */
    INT32((byte) 1),

    /**
     * INT64
     */
    INT64((byte) 2),

    /**
     * FLOAT
     */
    FLOAT((byte) 3),

    /**
     * DOUBLE
     */
    DOUBLE((byte) 4),

    /**
     * TEXT
     */
    TEXT((byte) 5),

    /**
     * VECTOR
     */
    VECTOR((byte) 6);

    private final byte type;

    TSDataType(byte type) {
        this.type = type;
    }

    /**
     * give an integer to return a data type.
     *
     * @param type -param to judge enum type
     * @return -enum type
     */
    public static TSDataType deserialize(byte type) {
        return getTsDataType(type);
    }

    public byte getType() {
        return type;
    }

    public static TSDataType getTsDataType(byte type) {
        switch (type) {
            case 0:
                return TSDataType.BOOLEAN;
            case 1:
                return TSDataType.INT32;
            case 2:
                return TSDataType.INT64;
            case 3:
                return TSDataType.FLOAT;
            case 4:
                return TSDataType.DOUBLE;
            case 5:
                return TSDataType.TEXT;
            case 6:
                return TSDataType.VECTOR;
            default:
                throw new IllegalArgumentException("Invalid input: " + type);
        }
    }

    public static TSDataType deserializeFrom(ByteBuffer buffer) {
        return deserialize(buffer.get());
    }

    public static int getSerializedSize() {
        return Byte.BYTES;
    }

    public void serializeTo(ByteBuffer byteBuffer) {
        byteBuffer.put(serialize());
    }

    public void serializeTo(DataOutputStream outputStream) throws IOException {
        outputStream.write(serialize());
    }

    public int getDataTypeSize() {
        switch (this) {
            case BOOLEAN:
                return 1;
            case INT32:
            case FLOAT:
                return 4;
            // For text: return the size of reference here
            case TEXT:
            case INT64:
            case DOUBLE:
            case VECTOR:
                return 8;
            default:
                throw new UnSupportedDataTypeException(this.toString());
        }
    }

    /**
     * @return byte number
     */
    public byte serialize() {
        return type;
    }

    /**
     * @return whether a numeric datatype
     */
    public boolean isNumeric() {
        switch (this) {
            case INT32:
            case INT64:
            case FLOAT:
            case DOUBLE:
                return true;
            // For text: return the size of reference here
            case BOOLEAN:
            case TEXT:
            case VECTOR:
                return false;
            default:
                throw new UnSupportedDataTypeException(this.toString());
        }
    }
}
